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Mordenite-bearing tuffs from Prassa Quarry, Kimolos Island, Greece

Athanasios Godelitsas, Platon Gamaletsos and Maria Roussos-Kotsis
Mordenite-bearing tuffs from Prassa Quarry, Kimolos Island, Greece (in Natural zeolites; from genesis to applications, Alessio Langella (prefacer) and Piergiulio Cappelletti (prefacer))
European Journal of Mineralogy (December 2010) 22 (6): 797-811

Abstract

We studied the geological and technological features of altered pyroclastic rocks from the main Bentomine Kimolian Enterprises S.A. quarry, in the Prassa region on the northeastern part of the Kimolos island, Greece. Particular emphasis was given to a MOR-type (mordenite) zeolite-rich material, tuff, which also contains K-feldspars, opal-CT and clays (mainly smectite) according to X-ray diffraction (XRD) and scanning electron microscopy (SEM) with energy-dispersive spectrometry (EDS). Additionally, it was characterised by a relatively low SiO (sub 2) component (av. 70 wt%) compared to surrounding volcanic rocks. Mordenite crystals are alkali- (Na- and moreover K-) rich. According to trace-element discrimination diagrams (Zr/TiO (sub 2) -Nb/Y), the protoliths of the mordenite-bearing tuffs could be trachyandesites, whereas Ti/Al-Eu/Eu (super *) diagrams indicated a clear felsic affinity. Normalised REE patterns confirmed an expected negative Eu anomaly and a relative HREE depletion, whereas relevant multi-element diagrams indicated positive Cs, Rb, Th, Pb, U and Ta, negative Ba, P and Ti and compatible elements anomalies. The SSA (sub BET) of the rocks reached a value of 63 m (super 2) /g. In that case, the CEC was measured to be 98 meq/100 g. The above data suggest that the industrial minerals exploited in the Prassa quarry show good capabilities for the development of new products for innovative industrial and daily uses.


ISSN: 0935-1221
EISSN: 1617-4011
Serial Title: European Journal of Mineralogy
Serial Volume: 22
Serial Issue: 6
Title: Mordenite-bearing tuffs from Prassa Quarry, Kimolos Island, Greece
Title: Natural zeolites; from genesis to applications
Author(s): Godelitsas, AthanasiosGamaletsos, PlatonRoussos-Kotsis, Maria
Author(s): Langella, Alessioprefacer
Author(s): Cappelletti, Piergiulioprefacer
Affiliation: University of Athens, Faculty of Geology and Geoenvironment, Athens, Greece
Affiliation: Universita del Sannio, Dipartimento di Studi Geologici e Ambientali, Benevento, Italy
Pages: 797-811
Published: 201012
Text Language: English
Publisher: Schweizerbart'sche Verlagsbuchhandlung (Naegele u. Obermiller), Stuttgart, Germany
Meeting name: XIV international clay conference
Meeting location: Taranto, ITA, Italy
Meeting date: 20090614June 14-20, 2009
References: 78
Accession Number: 2011-009221
Categories: Mineralogy of silicates
Document Type: Serial Conference document
Bibliographic Level: Analytic
Illustration Description: illus. incl. 2 tables, geol. sketch map
N36°47'60" - N36°47'60", E25°33'00" - E25°33'00"
Secondary Affiliation: Universita di Napoli "Federico II", ITA, ItalyBentomine Kimolian Enterprises S.A., GRC, Greece
Country of Publication: Germany
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, copyright, Schweizerbart'sche Verlagsbuchhandlung. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201106
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